I work on two aircraft with the 2 display Chelton. One is a police equipped Bell 407 and one brand new Enstrom 480B (s/n 5117) also police equipped. Both aircraft are fairly new and have had no down time issues due to a unit failure yet. On the 407 we had to tweak some settings regarding frame refresh rate and some horizion gyro display over/under sensitivity but that was accomplished while the unit was installed in the aircraft using Chelton tech support over the phone and the built in maintenance menus in the units them selves.
As for the Enstrom, it has maybe 60 hours on it since new and no squawks. Seems to be a fine system, but a few older pilots commented on that it tends to keep your head down in the cockpit more when you might be better served looking outside.
Last edited by helofixer; 6th Apr 2008 at 04:58.